Manipulation of the leaching behaviour of high-alloyed steel EAF slags through the particle size modulation

The safe disposal of EAF slag have become crucial due the environmental and health protection regulations. Its direct reuse is hampered by the possible release of toxic elements into the surrounding environment over time. Specifically, EAF slag from high-alloyed steel production could potentially re...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2024-05, Vol.1309 (1), p.12008
Main Authors: Mombelli, D, Dall’Osto, G, Cozzo, S, Mapelli, C
Format: Article
Language:English
Subjects:
Alloying elements
Brownmillerite
Calcium aluminum ferrite
Chromium
Comminution
Dicalcium silicate
Dissolution
Emission analysis
Fractions
Heavy metals
High alloy steels
Inductively coupled plasma
Leaching
Mixtures
Molybdenum
Optical emission spectroscopy
Particle size
Size reduction
Slag
Steel production
Water purification
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Summary:The safe disposal of EAF slag have become crucial due the environmental and health protection regulations. Its direct reuse is hampered by the possible release of toxic elements into the surrounding environment over time. Specifically, EAF slag from high-alloyed steel production could potentially release toxic metals (e.g., Ba, Cr, Mo and V). Currently, the assessment of leaching behaviour is carried out according to the EN 12457:2002 standard, which generically specify that the material should not be finely ground, limiting the particle size as much as possible. However, no guidance is given on reducing particle size and handling fine fractions, which could lead to manipulation of data and variability of results. In this work six different fractions (from
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1309/1/012008